Back portion of a seating apparatus



FIG. 1 is a front elevational view of a back portion of a seating apparatus according to the principles of the present invention; and,

FIG. 2 is a rear elevational view thereof.

The present application is directed to the design illustrated in the drawings. The other features of the drawings are not considered part of the design sought to be patented, and have accordingly been shown in broken lines. 

The ornamental design for a back portion of a seating apparatus, as shown and described. 